Plan your trip
The best time to visit Perth
Perth averages daytime highs of 23°C and overnight lows around 14°C across the year. Here's when to go — season by season and month by month — based on a decade of climate data.
In short
- 🌤️ Best overall: December, November, October — the most comfortable, driest stretch.
- 🔥 Hottest: January (~30°C) · Coolest: July (~17°C)
- 🌧️ Wettest: July · Driest: December
- 💸 Quietest / best value: the autumn and spring shoulder seasons (outside the Dec–Jan holidays).
12°C Cloudy in Perth
Winter · H 17° / L 12° · Cosy season — warm up indoors.
Hottest month
January
avg high 30°C
Coolest month
July
avg high 17°C
Wettest month
July
~112mm
Driest month
December
~8mm
Our pick
For the best balance of comfortable weather and fewer wet days, aim for December, November, October. If you don't mind the heat, January is peak summer; for cooler, quieter exploring, July is the mildest stretch. Whatever month you choose, check what's on and our 48-hour itinerary.
Perth season by season
What each season is actually like — and what it's best for.
Summer in Perth
December – February
Summer is hot in Perth — average highs around 29°C, overnight lows near 18°C, and about 51mm of rain across the season (dry). Beach days, early starts and long evenings out — pack sun protection, a hat and water.
Autumn in Perth
March – May
Autumn is warm in Perth — average highs around 24°C, overnight lows near 15°C, and about 159mm of rain across the season (moderate rain). Mild, settled days make this prime time for walks, wine country, markets and leisurely lunches.
Winter in Perth
June – August
Winter is mild in Perth — average highs around 18°C, overnight lows near 10°C, and about 308mm of rain across the season (wet). Cosy season — lean into cafes, museums, galleries and snug pubs; bring a few layers.
Spring in Perth
September – November
Spring is mild in Perth — average highs around 22°C, overnight lows near 13°C, and about 105mm of rain across the season (dry). Everything reopens outdoors — parks, gardens, markets and the first warm days for the coast.
Peak season & crowds
Perth is busiest — and accommodation priciest — over the December–January summer school holidays around Christmas and New Year, plus long weekends and major events. For thinner crowds and better value, the autumn (March – May) and spring (September – November) shoulder seasons are the sweet spot — mild weather without the peak-season squeeze. Book ahead if you're visiting around a festival; see what's on to plan around it.
Perth weather month by month
Average daily high & low temperature and total monthly rainfall.
| Month | Season | High | Low | Rainfall |
|---|---|---|---|---|
| January | Summer | 30°C | 19°C | 23mm |
| February | Summer | 30°C | 19°C | 20mm |
| March | Autumn | 28°C | 18°C | 40mm |
| April | Autumn | 24°C | 15°C | 42mm |
| May | Autumn | 21°C | 12°C | 77mm |
| June | Winter | 18°C | 11°C | 99mm |
| July | Winter | 17°C | 10°C | 112mm |
| August | Winter | 18°C | 10°C | 97mm |
| September | Spring | 19°C | 11°C | 47mm |
| October | Spring | 22°C | 13°C | 37mm |
| November | Spring | 25°C | 15°C | 21mm |
| December | Summer | 28°C | 17°C | 8mm |
Source: Open-Meteo historical climate data, 10-year averages (2014–2023). Day-to-day weather varies — check the current forecast before you travel.
Best time to visit Perth — FAQs
When is the best time to visit Perth?+
December, November, October generally offer Perth's most comfortable mix of pleasant temperatures and fewer wet days. The warmest month is January (average high 30°C) and the coolest is July (average high 17°C).
What is the hottest month in Perth?+
January is the hottest month in Perth, with average daytime highs around 30°C.
What is the coldest month in Perth?+
July is the coolest month, with average highs near 17°C and overnight lows around 10°C.
What is the wettest month in Perth?+
July is typically the wettest month (about 112mm of rain on average), while December is the driest at around 8mm.
When is the cheapest, quietest time to visit Perth?+
The shoulder seasons — autumn (March – May) and spring (September – November) — are usually quieter and better value than the summer peak. The busiest, priciest stretch is the December–January school-holiday period around Christmas and New Year.
What is summer like in Perth?+
Summer (December – February) is hot in Perth, averaging highs near 29°C and lows around 18°C, with roughly 51mm of rain across the season.
What is winter like in Perth?+
Winter (June – August) is mild in Perth, with average highs around 18°C and overnight lows near 10°C.
How many days do you need in Perth?+
Two to three days covers the highlights — see our 48-hour itinerary for a ready-made plan — while four or more lets you explore the suburbs and day trips at a relaxed pace.